Table 4.

Observed 95% CL signal strength ($\mathit{\mu }$) upper limits for different ${\mathit{\pi }}_{\text{v}}$ models

${\mathit{\pi }}_{\text{v}}$ mass	${\mathit{\pi }}_{\text{v}}$ lifetime (ps)
	2	5	10	20	50	100	200	500
25$\mathrm{GeV}/c^2$	1.64	0.83	1.12	1.22	2.84	4.37	9.28	22.82
35$\mathrm{GeV}/c^2$	0.63	0.35	0.32	0.41	0.76	1.37	2.56	5.86
43$\mathrm{GeV}/c^2$	0.52	0.21	0.16	0.21	0.35	0.63	1.12	2.77
50$\mathrm{GeV}/c^2$	0.50	0.17	0.14	0.15	0.25	0.41	0.76	1.72
35$\mathrm{GeV}/c^2$, ${\mathit{\pi }}_{\text{v}}\to c\overline{c}$	0.33	0.17	0.16	0.20	0.39	0.64	1.19	2.90
35$\mathrm{GeV}/c^2$, ${\mathit{\pi }}_{\text{v}}\to s\overline{s}$	0.40	0.20	0.19	0.24	0.42	0.77	1.41	3.51